I almost bought my neighbor's house:
~700sq. Cheap 2x4 construction. No insulation. Cardboard walls. kitchens and baths gutted. Orangeburg main pipe. Asbestos(cough composite) sheathing. Broken supply line under slab unfixed for years and years. Poor grading and trees ready to topple throughout the yard. There was deadly mold inside that left me puking for hours after only a 1hr visit.
A definite tear down.
+Land value
-removal -main -trees -regrading -city taxes -rebuilding
=next to zero habitable value on the market, per my estimation.
I would have combined driveways, gutted the structure, and made the house into a garage. Geothermal loop and heated floors for the winter. Big yard for chickens.
That would have been my summer project starting this year if all went well.
But alas, some sucker bought it for way too much.
Oh well. Dreams revamped.
(House on left is precise to within inches/House on right is poor estimation and very oversized in pic)